Static molds – Forming product having joint or coupling – Lapped interfitted facing – alternating reversing identical...
Patent
1992-02-03
1993-06-01
Aftergut, Karen
Static molds
Forming product having joint or coupling
Lapped interfitted facing, alternating reversing identical...
249144, 249146, 249161, 249169, 249177, 425182, 425432, 425456, B28B 728, B28B 2176
Patent
active
052156737
ABSTRACT:
An apparatus for the production of a symmetrical oval concrete pipe including an oval male joint member and an oval female joint member formed on opposite ends of an oval pipe body having a form including an outer jacket and an inner core disposed in spaced relationship relative to each other to form the oval pipe body therebetween; an upper pallet and a lower pallet configured to form the oval male joint member and the oval female joint member respectively, and a pallet positioning structure configured to engage the upper pallet and the lower pallet to operatively position the upper pallet and lower pallet relative to the outer jacket and inner core such that corresponding points on the upper pallet and the lower pallet are aligned relative to each other whereby corresponding points of the oval male joint member and the female joint member are aligned relative to each other.
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Aftergut Karen
Fisher III A. W.
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